youtube widget in kentico cms 7 not working

I have added a youtube video to my kentico cms 7 website using youtube video widget. But its not showing the video in my page. Instead of that its showing something like this in my webpage.
{^youtubevideo|(width)425|(height)264|(rel)True|(loop)False|(autoplay)False|(url)http://www.youtube.com/watch?v=5Es-Xk4rC7o|(fs)True^}